Eva maybe embracing second friend in my book (10)
I believe the answer is:
personally
'in my book' is the definition.
(I've seen this before)
'eva maybe embracing second friend' is the wordplay.
'eva maybe' becomes 'Peron' (Eva Peron, wife of Argentine president Juan Peron).
'embracing' is an insertion indicator.
'second' becomes 's' (common abbreviation).
'friend' becomes 'ally' (synonyms).
'peron' going around 's' is 'person'.
'person'+'ally'='PERSONALLY'
(Other definitions for personally that I've seen before include "in my book" , "I think" , "in my opinion" , "Speaking for myself" , "as far as one is concerned" .)